Hose-clamp.



A. F. SCHROEDER.

HOSE CLAMP.

APPLICATION FILED APII. lo. 1914.

Patend oct. 3, 1916.

UNITED STATES PATENT OFFICE.

ALBERT FQSCHROEDER, A0]? CLEVELAND, OHIO.

HosE-cLAMP.

To all lwhom t may concern:

Be it known' that I, ALBERT F. SCHROEDER, a citizen ofthe United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented a new and useful Improvement in Hose-Clamps, of which thefollowing isa specification, the principle of the invention beingherein' explained and the best mode in which I have contemplatedapplying that principle, so as to distinguish it from other inventions.

My invention constitutes an improvement in hose-clamps whereby theconstruction of the clamp itself yand hence thev binding action betweenit and the members which 1t is desired to secure to each other may beeffected with absolute uniformity." Accordingly, the advantage'derivedconsists in impartingthe same progressive pressure at all points aroundthe parts which are actually inclosed. by the clamp, and in consequenceleakage is more likely precluded.

To contrive an article which shall be simple and hence economical ofmanufacture has been held in mind as one object.

A further object of my preferred form J hasbeen to make possible theadaptation of certain parts for utilization in all the various sizes ofclamps required.

My inventive conception is associated with means which are hereinafterexplained and vvariously combined in the claims. While the annexeddrawing and particular descrip# around two other parts. Fig. II is asimilar view showing the clamp afterbeingtightened. Fig. III is a sideview of the clamp itself. Fig. IV'is a topplan view of Fig. III. Fig.

V is a perspective view of one detail. -Fig.

VI is a side view of another detail as manufactured. Fig. VII is a sideview of a second modification. Fig. VIIIis an end view' of Fig. IX.

The use to which may Ainvention is ordi-A narily put is to fastentogether, say, a hose and a pipe length. These I have'designated in theseveral views where shown, as H and P respectively. The practicalapplication of Specification of Letters Patent. 1

my invention is to-envelop that portion of the hose length whichinclusesl a certain portionr of the pipe and thereafter to effect theconstriction of the clamp to exert a binding of the hose against thepipe, to the end ofv avoiding leakage at the point of connectiontherebetween.

My construction involves a flexible band A preferably of spring metal.This band has its ends curved in` opposed directions to form hookedextremities a which' extend toward each other. This band is separatelyshown in Fig. VI and as will be apparent,

may be manufactured., in various lengths from stock of given dimensions.ception is not to have the band A as thepri- Myl con- Patentamt-3,1916.

' Application ined April 1o, 1914. seria1no.s'3o,s5a 1 mary portion onlypartly surround the hose and pipe, but .to entirely surround these partsto be fastened and then continue nearly once again around the s ame. Inother words, I I urposely convolve the band upon itself to orm onecomplete convolution and the major portion of anotherl as perhaps best-seen in Fig. III. As so formed the two hook portions a will each lie toone side for convenience, usually the upper side of the medianhorizontal plane of the pi e.

My invention furthermore 'involves the provision-of a pair of clips B;Each of these clips B has a lower portion b of arcv uate contour, alower extremity b2 provided with a transversely elongated aperture b,and finally with an upper extremity b4 which is anged upwardly andprovided with a circular opening b5. These clips are preferably of metalof sufficient thickness to bev rlgid. T-he apertures b3 are eachdesigned to accommodate one of the at hooks a such that when the `clipsB are assembled with respect to the band A the'partialconvolution of thelatter is more nearly completed.

Abolt' C is'adapted to extend through the two'openings b5 and theprovision of the usual nut o makes possible the drawing together of theanges b4as will be readily understood. In this manner, my hose-clamp asan entirety may be constricted in a manner common to the 'art Ascontradistinguished from other articles of this character with which myexperiencehas made me aware, my invention l involves what is in effect asimultaneous and uniform constrlctlon of the two convolutions. By reasonof this circumstance each entirely formed by the band A, is caused tomove inwardly in a radial direction. ,This

resultant movement in turn positively insures against a puckering orwrinkling of the hose upon the pipe and therefore insures a atjoruniform contiguity between the hose and pipe, and obviously this is theonly absolute guarantee against leakage.

Figs. VII and VIII illustrate a modification. The band 0L4 utilizes apiece of wire having downwardly extending hooked extremities a5, andthese are adapted to extend through circular apertures a6 in the lowerextremities of a pair of clips be. These clips b are provided on eachside with stiening flanges 57, have their free extremities 798 bentupwardly and provided With openings b9 through which the bolt C isintended to project.

My invention being thus described with sufficient thoroughness, what Idesire to secure by Letters Patent and therefore claim specically, is:

l. A hose clamp comprising a smooth flexible band having its oppositeends bent to form hook portions projecting in the same direction, saidband being helically convolved one and a half times to present said hookportions projecting outwardly, and a pair of similarly smooth andpartially arcuate clips having openings at corresponding ends andloosely engaged therethrough by said hooks, each of lsaid clips beingfur-,- thermore fashioned with an outward proj ection each likewiseprovided with an opening, and adjustable means for drawing saidprojections together in an arcuate direction, the arrangement being suchthat an equal constriction effect is exercised in both directions aroundthe clamp and 'smoothly betweensaid clips. j

2. A hose clamp comprising a plain exible band having each of its twoends bent at an angle with respect to the longitudinal extent of saidband to form hooks, said band being adapted to `be convolved uponitself, and a pair of arcuate clips loosely connected with such hooks ofthe band respectively and adapted to complete a second convolution, andmeans for drawing said clips togetherl whereby a uniform constriction ofthe whole may be effected therearound without presenting meeting edgesfor movement past each other in the plane of the proximate portion ofsaid hose.

Signedby'me, this 1st day of April, 1914.

ALBERT F. SCHROEDER. Attested by- WV. C. BROCKEN, ``MARY COLEMAN.

